In a Bash script, how can I exit the entire script if a certain condition occurs?

Question

I\'m writing a script in Bash to test some code. However, it seems silly to run the tests if compiling the code fails in the first place, in which case I\'ll just abort the

Answer 1

Instead of if construct, you can leverage the short-circuit evaluation:

#!/usr/bin/env bash

echo $[1+1]
echo $[2/0]              # division by 0 but execution of script proceeds
echo $[3+1]
(echo $[4/0]) || exit $? # script halted with code 1 returned from `echo`
echo $[5+1]

Note the pair of parentheses which is necessary because of priority of alternation operator. $? is a special variable set to exit code of most recently called command.